Antiprotozoal Effect of Artemisia indica Extracts and Essential Oil.

Tasdemir, Deniz , Tierney, Michelle, Sen, Rupashree, Bergonzi, Maria, Demirci, Betül, Bilia, Anna, Baser, Kemal, Brun, Reto and Chatterjee, Mitali (2015) Antiprotozoal Effect of Artemisia indica Extracts and Essential Oil. Planta Medica, 81 (12-13). pp. 1029-1037. DOI 10.1055/s-0035-1546125.

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Abstract

Diverse solvent extracts of Artemisia indica leaves originating from the West Bengal region (India) were assessed for the content of artemisinin and characteristic Artemisia polymethoxyflavonoids, namely eupatin (1), casticin (2), chrysoplenetin (3), cirsilineol (4), chrysophenol-D (5), and artemetin (6). HPLC-DAD and HPLC-MS were used to investigate the extracts macerated by solvents of increasing polarity, i.e., petroleum ether, n-hexane, dichloromethane, acetone, MeOH, or EtOH (either 96, 80, or 60?% v/v), and hot water. Artemisinin was absent in all extracts. The acetone and EtOH extracts comprised the highest levels of polymethoxyflavonoids, whereas no flavonoid could be detected in the infusion. None of the remaining extracts contained chryosphenol-D (5) or artemetin (6), while chrysoplenetin (3) was found in all extracts. The essential oil of the plant was also obtained by hydrodistillation and analysed by gas chromatography and gas chromatography-mass spectrometry simultaneously. Of the 92 compounds detected in the oil, camphor (13.0?%) and caryophyllene oxide (10.87?%) were the major components. All solvent extracts and the volatile oil showed in vitro antimalarial activity, plus a potential malaria prophylactic effect by inhibiting at least two recombinant plasmodial fatty acid biosynthesis (PfFAS-II) enzymes. Except for the infusion, all extracts were also active against other parasitic protozoa and displayed low cytotoxicity against mammalian cells. This is the first detailed study investigating both artemisinin and polymethoxyflavonoid content as well as in vitro malaria prophylactic and detailed antiprotozoal potential of A. indica extracts against a panel of protozoan parasites. This is also the first report of antiparasitic activity of the essential oil of the plant.

Document Type: Article
Keywords: Artemisia indica; Asteraceae; essential oil; HPLC-DAD; LC-MS; malaria; Plasmodium FAS-II; polymethoxyflavonoid
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-MN Marine natural products chemistry
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1055/s-0035-1546125
ISSN: 0032-0943
Date Deposited: 02 Jul 2015 07:42
Last Modified: 14 Mar 2019 08:59
URI: http://oceanrep.geomar.de/id/eprint/29102

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